HydroLogic Stealth Reverse Osmosis filters, Tall Boy, Small Boy, and Big Boy de-chlorinator's & sediment filters are professional quality water purification products designed for use in gardening and hydroponics, residential, aquarium, or commercial applications. Many of HydroLogic's systems, like the Evolution 1000, are completely made in the USA. From a backyard gardener to a professional coffee roaster, our customers appreciate HydroLogic's cutting-edge technology, simple set-up, affordable price and of course, amazing results. HydroLogic prides themselves on being an earth friendly company and utilize local resources and labor for the majority of our products.